Snezhana Chernova

The Centre sends Philip and Elizabeth on a mission unlike any previous operation; they struggle to contain the potential risks of Paige and Matthew Beeman's budding relationship.

Philip must take stock of his life with Martha and make a difficult choice, from which there is no return.

Paige begins to see her mother in a new light, and realises she may have inherited some of her mother's skills. Oleg nears his breaking point with Stan.

Philip and Elizabeth carry out a mission that strains their marriage and threatens devastating implications for the country; Stan and Oleg struggle with the consequences of their history.

Philip and Elizabeth are sceptical of a new assignment; a ghost from Philip's past catches up to him, causing unforeseen trouble; Stan makes a move that puts his entire career on the line.

Gabriel makes an announcement that shocks Elizabeth and Philip, and reveals details about Philip's past; Stan and Aderholt set a trap; Oleg and Ruslan ambush a suspect.